. >> reporter: at the state department today, secretary clinton did not dispute mr. biden's contention that initial intelligence about the attack led to the administration's early inaccuracies. >> there is much we still don't know and i am the first to say that. but as someone who has been at the center of this tragedy from the beginning i do know this: there is nobody in the administration motivated by anything other than trying to understand what happened. >> reporter: white house officials pointed out today as vice president did last night that it was republicans led by congressman ryan who voted to slash diplomatic security funding. scott? >> pelley: nancy, thank you. we are learning more tonight about the most costly enemy attack ever in afghanistan. it was about a month ago that two u.s. marines were killed and six marine attack jets were destroyed in a raid on camp bastion. the jets cost between $20 and $30 million each. the base is one of the most heavily defended in the war so we asked kelly cobiella to tell us about the attack through the words of the marin